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Page 1: ...uy your excess underutilized and idle equipment along with credit for buybacks and trade ins Custom engineering so your equipment works exactly as you specify Critical and expedited services Leasing R...
Page 2: ...e Area Balanced Photoreceivers Models 2307 2317 2584 Junction Ave San Jose CA 95134 1902 USA phone 408 919 1500 e mail contact newfocus com www newfocus com 23x7 LA Blncd Rcvr revA fm Page 1 Tuesday S...
Page 3: ...bject to change without notice Copyright 2004 2002 1998 New Focus Inc a division of Bookham Technology plc All rights reserved The logo the logo and NEW FOCUS Inc are trademarks or registered trademar...
Page 4: ...10 Frequency Response and Noise 11 Measuring Bandwidth 11 Measuring Noise 11 Typical Frequency Response and Noise Spectra 14 Common Mode Rejection 17 Using Filters and Optical Fiber 18 Characteristic...
Page 5: ...4 Contents NEW FOCUS Inc 23x7 LA Blncd Rcvr revA fm Page 4 Tuesday September 28 2004 1 59 AM...
Page 6: ...specifications begin on page 21 The large area of the photodetector makes it easy to couple light from a variety of sources including diode lasers broadband sources and light from optical fibers onto...
Page 7: ...on top of the receiver for easy access Figure 2 The Model 23X7 casing A full mechanical diagram of the Model 23X7 casing is available on page 21 0 0 0 2 0 4 0 6 0 8 1 0 Wavelength nm 200 400 600 800 1...
Page 8: ...the casing to a post or pedestal or the threaded insert can strip out of the plastic pad 3 Connect the receiver output Connect your voltmeter oscilloscope or other instrument to the Output BNC connec...
Page 9: ...condition of the battery push the red power switch to the BATT CHK position If the green LED lights up the battery is in good condition When the battery voltage falls below about 6 5 volts the green L...
Page 10: ...the gain and bandwidth values for each of these three gain settings The amplifier design is optimized so it consumes a minimum of power and generates a minimum of noise at each of the gain settings A...
Page 11: ...s trans impedance gain in V A For example the Model 2307 on the medium gain setting and with 10 W of optical power at 900 nm on one photodiode will have an output voltage of approximately 10 W 0 6 A W...
Page 12: ...y and Gain 0 is the gain at DC The photoreceiver s bandwidth is defined as the frequency where the gain has decreased by 3 dB or a factor of Measuring Noise The photoreceiver noise is characterized us...
Page 13: ...A Calculating NEP The noise equivalent power NEP can be calculated by dividing the photocurrent noise by R the detector s responsivity see page 6 From DC to 150 kHz the average photocurrent noise for...
Page 14: ...h 1 M ohm input impedance is 1 6 mV rms This is often the limiting factor in broad band measurements Summary The Model 2307 on the high gain setting the average NEP is 3 3 pW and this yields an output...
Page 15: ...cal signals Typical Frequency Response and Noise Spectra The 3 dB frequency bandwidth is defined as the frequency where the photoreceiver s transimpedance gain has decreased by a factor of The typical...
Page 16: ...odel 2307 Hz Model 2307 Low Gain Setting 35 0 30 0 25 0 20 0 15 0 10 0 5 0 0 0 5 0 0 200 400 600 800 1000 1200 1400 Frequency kHz Frequency Response dB 1 E 11 1 E 10 1 E 09 1 E 08 1 E 07 Current Noise...
Page 17: ...50 200 250 300 350 400 450 Frequency kHz Frequency Response dB 1 00E 11 1 00E 10 1 00E 09 1 00E 08 1 00E 07 Current Noise A_rms sqrt Hz Model 2317 High Gain Setting 35 30 25 20 15 10 5 0 5 0 5 10 15 2...
Page 18: ...subtraction Figure 6 shows the CMRR of each model using the following definition CMRR 20 log Vout1 Vout2 Vout1 Figure 6 Typical CMRR for the Model 2307 and Model 2317 at the low gain settings Model 2...
Page 19: ...or The Model 1280 1 filter holder allows you to mount a 1 diameter optic in front of the photodetector For instance you can mount a colored glass filter to remove unwanted wavelengths or mount a neutr...
Page 20: ...15 9 Model 1280 patent pending dia 1 30 33 0 holes for tightening 1 04 32 thread Retaining ring for holding 1 or 25 mm optics 6 32 nylon tipped setscrew for holding 1 or 25 mm optics 0 13 3 2 FC conn...
Page 21: ...20 Using Filters and Optical Fiber NEW FOCUS Inc 23x7 LA Blncd Rcvr revA fm Page 20 Tuesday September 28 2004 1 59 AM...
Page 22: ...2 50 63 5 external input power 15 VDC 1 00 25 4 1 25 31 8 0 585 14 9 1 33 33 8 photodetectors 2x 1 040 32 THD for mounting Model 1280 Filter Holders and Model 1281 FC Fiber Adapters not included outpu...
Page 23: ...ax Transimpedance Gain 2 x 103 105 2 x 106 V A Output Impedance 100 Minimum NEP 3 3 pW CW Saturation Power 4 mW Max Differential Power 4 mW Max Power per Photodiode damage threshold 10 mW mm2 Detector...
Page 24: ...y 0 8 A W Max Transimpedance Gain 2 x 103 105 2 x 106 V A Output Impedance 100 Minimum NEP 25 pW CW Saturation Power 3 mW Max Differential Power 3 mW Max Power per Photodiode damage threshold 6 mW mm2...
Page 25: ...cluding holidays Toll Free 1 866 NUFOCUS 1 866 683 6287 from the USA Canada only Phone 408 284 6808 Support is also available by fax and email Fax 408 980 8883 Email techsupport newfocus com We typica...
Page 26: ...uipment Have surplus equipment taking up shelf space We ll give it a new home Learn more Visit us at artisantg com for more info on price quotes drivers technical specifications manuals and documentat...
